The HIFFIN Lens Filter Step Up Conversion Rings Set includes 8 high-quality metal rings designed to allow you to attach filters or other accessories with larger thread sizes to lenses with smaller thread sizes. Ranging from 49mm to 82mm, this set provides flexibility in using various filter sizes across different lenses. The set is perfect for photographers or videographers who want to standardize their filters for multiple lens sizes, saving on the cost of buying separate filters for each lens. Additionally, it comes with a hood that helps to prevent lens flare and offers extra protection for your lens during use.